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trans ‐Stilbene Incorporation in Acidic Medium‐Pore ZSM‐5 Zeolite: A Pulsed EPR Study
Author(s) -
Vezin Hervé,
Moissette Alain,
Hureau Matthieu,
Brémard Claude
Publication year - 2006
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200600279
Subject(s) - electron paramagnetic resonance , unpaired electron , chemistry , zeolite , electron , radical , electron transfer , photochemistry , ionization , spectroscopy , electron acceptor , electron paramagnetic resonance spectroscopy , inorganic chemistry , crystallography , nuclear magnetic resonance , organic chemistry , catalysis , ion , physics , quantum mechanics
Entrapped radicals : trans ‐Stilbene (C 6 H 5 CHCHC 6 H 5 , t ‐St) entrapment in medium‐pore acidic H n ZSM‐5 zeolites induces t ‐St ionization and subsequent electron transfer. The aluminium‐rich ZSM‐5 participates both as electron acceptor and donor to the unusual stabilization of the t ‐St@H n ZSM‐5 .+.− electron–hole pair. Pulsed electron paramagnetic resonance (EPR; see picture) spectroscopy provides a realistic picture of the chemical environments of the unpaired electrons.